US Patent 7747321 Implantable medical device feedthrough assembly having a coated conductor

An electrical feedthrough for an implantable medical device (IMD) is provided that employs a feedthrough conductor having a non-platinum based inner core and one or more layers of a conductive coating to control oxide growth on the surface of the conductor. The coating permits soldering the feedthrough conductor to IMD electronics. The resulting feedthrough provides a substantial cost savings over feedthroughs employing a solid platinum or platinum-iridium conductor.